Which is a unit of momentum?
A) N-m/s
B) kg-m/s
C) kg-m/s2
D) N-m/s2
please hurry i need help asap, will mark brainliest
Answers
Answer:
unit of momentum is kgm/s2
The unit for momentum can be Newton-second (Ns). In the CGS system, if the mass is in grams and the velocity in centimeters per second, then the unit of momentum will be gram-centimeters per second (g⋅cm/s).
What is momentum ?"Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton's laws of motion."
Know more about momentum here
https://brainly.com/question/4956182
#SPJ2
Related Questions
A .5kg book sits on top of a student's desk which is 9m high. How
much gravitational potential energy does the book have as it sits on the desk?
Answers
Answer:
441J
Explanation:
Given parameters:
Mass of book = 5kg
Height = 9m
Unknown:
Gravitational potential energy = ?
Solution:
The gravitational potential energy of a body is the energy due to the position of the body.
It is given as:
Gravitational potential energy = mass x acceleration due to gravity x height
Gravitational potential energy = 5 x 9.8 x 9 = 441J
which of these statements describe friction
Answers
(i) 10 m (ii) 20 m (iii) 40 m (iv) 80 m
(c) The maximum potential energy of the object if its mass is 200g 1 mark
(i) 100 J (ii) 120 J (iii) 160 j (iv) 200 J
(d) In the given graph the total mechanical energy will be 1 mark
(i) Same (ii) increases (iii) decreases (iv) will be zero.
(e) In the given graph the kinetic energy 1 mark
(i) Same (ii) increases (iii) decreases (iv) increases then decreases.
Answers
Answer:
20m
420=80m
100
increases
increases then decreases
PLEASE HELP ME I AM BEGGING YOU :)) 15 POINTS
A student investigated the energy being transferred using the
joulemeter (J).
The reading on the joulemeter was always 20 J lower than the
calculated value.
Name the type of error in the investigation
Answers
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light
visible light
Answers
Answer:
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light<<<----- CORRECT
visible light
Explanation:
Edge 2021
Infrared light is typically used to make images based on the temperatures of objects.
What is meant by electromagnetic spectrum?The range of all EM radiation arranged from high to low frequency (short to long wavelength) according to their frequency or wavelength. is known as the electromagnetic spectrum (EM).
Here,
Similar to visible light, X-rays are a type of electromagnetic radiation. X-rays have a higher energy than light, on the other hand, and can penetrate most materials, including the human body.
Images of inside body tissues and structures are produced using medical x-rays.
Electromagnetic energy in the infrared region of the spectrum can be seen by them. There is a relationship between an object's temperature and the electromagnetic radiation it releases since infrared radiation is strongly related to object temperature.
Hence,
Infrared light is typically used to make images based on the temperatures of objects.
To learn more about electromagnetic spectrum, click:
https://brainly.com/question/15576247
#SPJ5
Which type of energy is water held back by a dam?
Answers
Answer: hydroelectric dams
Explanation: Enormous energy is stored in water held back by hydroelectric dams. The energy is transformed into (a form of kinetic energy) as it falls across the dam. The falling water strikes the blades of a turbine and makes them spin, and the then turns the shaft of a generator.
The answer is hydroelectric dams because Enormous energy is stored in water held back by hydroelectric dams. The energy is transformed into (a form of kinetic energy) as it falls across the dam.
Explanation: Please mark me as brainliest!
Why am i tall?I nee to know.
Answers
explanation:
Answer:
If your parents are tall there's a big change you will be too, if your parents are short you'll be short. If you have a tall dad and a short mom you'll be in the middle of short and tall.
Explanation:
;)
please help! this this timed!!!
Answers
Answer:
Thermal heat
Explanation:
The water heats up which it means it is thermal (heat/hot)
What is the the outermon shell with elections!
Answers
Answer:
Valence shell
Explanation:
The valence shell contains valence electrons
how much energy must be absorbed by water with a mass of 0.5kg in order to raise the tempature from 30c to 65c
Answers
Answer:
62760J
Explanation:
Given parameters:
Mass = 0.5kg = 500g
Initial temperature = 30°C
Final temperature = 65°C
Unknown:
How much energy is absorbed by the water = ?
Solution:
To solve this problem, we use the expression below:
H = m C Δt
H = m x C x (t₂ - t₁ )
m is the mass
C is the specific heat = 4.184J/g°C
t₂ is the final temperature
t₁ is the initial temperature
So;
H = 500 x 4.184 x (65 - 30) = 62760J
In a series circuit, the current is _______
at every point around the circuit. Which of the following completes the sentence?
equal
different
Answers
In a series circuit, the current is _______
at every point around the circuit. Which of the following completes the sentence?
Answer:In a series circuit, the current is equal at every point around the circuit.
#CARRYONLEARNING #STUDYWELLAnswer:
The option that completes the sentence is;
Equal
Explanation:
A series circuit is a circuit arrangement whereby the components of the circuit are connected in a single chain by joining them end to end, thereby the current flows round the circuit through the singular path of the interconnected component in the circuit and therefore, the current which flows through each component as it flows round circuit, is equal at all points in the circuit.
Therefore, we have that in a series circuit, the current is equal at every point around the circuit.
In Florida, most of the rocks that are underground are a type of soft, white rock called limestone. If limestone is underwater for a long period of time, it begins to dissolve. Which of these processes most likely causes this change?
A. chemical weathering
B. erosion
C. deposition
D. physical weathering
Answers
In Florida, most of the rocks that are underground are a type of soft, white rock called limestone. Long-term submergence in water causes limestone to disintegrate. These processes most likely causes this change is called Physical weathering. Hence, Option D is the correct answer.
What is Physical weathering?Physical weathering is also known as mechanical weathering. It is the weakening of rocks followed by the disintegration due to the physical or mechanical forces including the actions on the rocks by the abrasion, frost chattering, temperature fluctuations and the salt crystal growth. Eventually, after many cooling and heating events, the rocks cracks and break into smaller pieces.
This same mechanical process applies when water freezes and thaws in the cracks of a rock. The chemical composition of the rock, however, remains the same in the process. In Florida, most of the rocks that are underground are a type of soft, white rock called limestone. Long-term submergence in water causes limestone to disintegrate.
These processes most likely causes this change is called Physical weathering. Hence, Option D is the correct answer.
To know more about limestone,
brainly.com/question/15148363
#SPJ2
A 30 kg child is in an elevator accelerating down at a rate of -5 m/s2.
a. Calculate the force of gravity on the child.
Answers
Answer:
The force is - 150 N
Explanation:
F = 30 • - 5 = - 150
The population in the United States in 2015 was 321 million people. It is projected to increase to 438 million people by the year 2050.
If projections are true, the US population will increase
% from 2015 to 2050.
Answers
Answer:
Haven't done this but I think it will increase by 73.29% not too anyone correct me if I'm worng
Answer:
C) 20%
Explanation:
The inheritance of genetic traits from parents to children follows predictable rules. Knowing that each parent contributes genes equally to each child, what determines an inherited trait such as eye color? a.Only the interaction between dominant genes. Only the interaction between dominant genes. b.Only the interaction between recessive genes. Only the interaction between recessive genes. c.The interaction between dominant and recessive genes. d.The interaction between dominant and recessive genes. The interaction between dominant and recessive genes does not determine inherited traits. The interaction between dominant and recessive genes does not determine inherited traits.
Answers
Answer:
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Explanation:
Which of the following agricultural advancements have had unforeseen adverse effects?
synthetic fertilizers wiping out nearby crops
irrigation causing damaging floods
hybrid plants causing cancer to consumers
use of pesticides increasing insect resistance
Answers
Answer:
use of pesticides increasing insect resistance
Explanation:
Pesticides are the chemicals used to kill or stop the growth of insects or pests in crops and plants.
Pesticides are used from a very long time and repeated use of same pesticide allowed insects to get use to of it and evolve themselves in a way that they become resistant to these pesticide, so pesticide do not have any effect on insects.
Hence, the correct answer is "use of pesticides increasing insect resistance".
Answer:
use of pesticides increasing insect resistance
Explanation:
A person walks 60 meters in 1 minute. Then walks 30 meters in 2 minutes. What is thier average speed over the 3 minute walk?
Answers
A man ice skating in the skating rink at Campus Martius in downtown Detroit, has a mass of 75 kg and an acceleration of 4.5 m/s2 (without friction). How much force is the man exerting?
Answers
Answer:
337.5 N.
Explanation:
Force is equal to the law: m.a
where m: mass, a: acceleration
While driving his sports car at 20.0 m/s through a residential neighborhood, Royston
comes up behind a slow-moving grandma and decides to pass her on the left. If
Royston can accelerate at 6.00 m/s2, how long will it take for him to reach a velocity of
30.0 m/s?
Answers
Answer:
1.67s
Explanation:
Given parameters:
Initial velocity = 20m/s
Acceleration = 6m/s²
Final velocity = 30m/s
Unknown:
Time taken = ?
Solution:
Acceleration is the rate of change of velocity with time. It is mathematically expressed as;
Acceleration = [tex]\frac{v - u }{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken
6 =[tex]\frac{30 - 20}{t}[/tex]
6 = [tex]\frac{10}{t}[/tex]
10 = 6t
t = 1.67s
A roller coaster begins at rest 120 m above the ground, as
shown. Assume no friction from the wheels and air, and that no energy is lost to heat, sound, and so on. The radius of the loop is 40 m. Find the speed of the roller coaster at points E and F.
Note:- Use g= 10 m/s2.
Answers
Answer:
B= 34.6 m/s
C= 49 m/s
D= 28.3 m/s
What is all cells in a body that arent formed in a reproductive organ???
Answers
Explanation:
An organ is made of several types of tissue and therefore several types of cells. For example, the heart contains muscle tissue that contracts to pump blood, fibrous tissue that makes up the heart valves, and special cells that maintain the rate and rhythm of heartbeats.
A boy is running at -8 m/s and a girl running at -2 m/s. Who is running faster? How do you know?
Answers
Answer:
the girl is running faster because -2 is greater than -8
Explanation:
For a particle to execute Simple Harmonic Motion it requires
A. Inertial factor and elastic (spring factor)
B. Torque
C. Inertial factor
D. elastic (spring factor)
Answers
Answer:
C
Explanation:
Inertial factor
A power plant has two types of transformers. The first type of transformer triples voltage and the second type of transformer reduces voltage by half. If both transformers have the same number of primary turns, how many secondary turns does the first type of transformer have?
a. 3/2 of the secondary turns in the second type of transformer
b. 1/6 of the secondary turns in the second type of transformer
c. 2/3 of the secondary turns in the second type of transformer
d. 6 times the secondary turns in the second type of transformer
Answers
Answer:
d . 6 times the secondary turns in the second type of transformer
Explanation:
In transformer , voltage is increased or decreased according to ratio of no of turns in secondary to no of turns in primary coil . The relation is as follows
V₂ / V₁ = n₂/n₁
n₁ and n₂ are no of turns in primary and secondary coil and V₁ and V₂ are voltage in primary and secondary coil.
for first type , Let no of turn in primary = n and no of turn in secondary = n₁
V₂ / V₁ = 3
so
n₁/n = 3
n = n₁ /3
n₁ = 3n
For second type , let no of turn in secondary = n₂
V₂ / V₁ = .5
n₂/n = .5
n₂ = .5n
n₂ / n₁ = .5n / 3n
n₂ / n₁ = 1 / 6
n₁ = 6n₂
option d is correct .
A force of 50N is applied to a 6 kg object. What is the acceleration of the object?
Answers
Answer:
Should be 8.333 m/s^2
Explanation:
50/6 = 8.333
A circular disc of 0.67 kg mass and radius of 0.3 m rotates with an angular speed of 8 rad/s.
a) Find the moment of inertia of the disc.
b) Calculate the rotational kinetic energy of the disc.
Note: Show the details of your calculations as the final answer alone will not be acceptable.
Answers
Answer:
0.67 / 0.3 = 2.23
Explanation:
kg
mass
If a horse ran out of a hospital at 17 miles/hour SOUTHWEST, how far
would the horse go if it ran for 90 minutes?
Answers
Answer:
25.5
Explanation:
17/2+17
I REALLY NEED THE ANSWER!!!!
Answers
Answer:
vega the first one
pb
p
Explanation:
I need help ASAPP
Thanks+ BRAINLIST only for correct answer for these questions.
Which among the following forms of electromagnetic waves has the highest frequency range?
O Microwave
O Radio waves
O X-ray
O Ultraviolet
Radio waves carry information from a broadcasting station to your radio or television.
-visible light
- sound
-X -ray
- gamma ray
Answers
Answer: For the first part the answer is Radio Waves and the second part’s answer is gamma ray.
2. A science book is being pushed across a table. Can the book have a constant speed and a
changing velocity? Explain.